Portable crane.



J. DYKES.

PORTABLE CRANE.

APPLxcATioN FILED JUNE 13- 196.

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TNTTEB STATE@ FATFQT @F.FTQE,

JAMES DYKES, OF NEW ROCKFORD, NORTH DAKOTA.

PORTABLE CRANE.

Application le'd June 13, 1916.

To all whom it may concern.'

Be it known that I, JAMES DYKEs, a citizen of the United States, residing at New Rockford, in the county of Eddy and State of North Dakota, have invented certain new and useful. Improvements in Portable Cranes, of which the following is a specilication.

This invention relates to portable derricks or cranes adapted more particularly for use in connection with railway cars, freight trucks and the like, and has for one of its objects to provide a simply constructed device which may be readily applied to and disconnected from the vehicle or contiguous to the vehicle, and whereby relatively heavy articles may be disposed upon or removed from the platform of the vehicle.

With these and other objects in view, the invention consists in certain novel features of construction, as hereinafter shown and described and then speciiically pointed out in the claims; and in the drawings illustrative of the preferred embodiment ofthe invention-Figure 1 is an elevation of the improved device applied to a conventional railway car, the railway rail and the platform of the car being in section; Fig. 2 is a transverse section of the boom portion of the improved device, together with the car- `rier or traveler; Fig. 3 is a section on the line 3 3 of Fig. 1; Fig. 4 is an enlarged plan view of the mast and a portion of the boom illustrating the construction more fully; Fig. 5 is a side elevation of the parts shown in Fig. i; Fig. 6 is a section on the line 6*(5 of Fig. 5.

Corresponding and like parts are referred to in the following description and indicated in all the views of the drawings by the same reference characters.

rlhe improved device includes a support or standard represented as a whole at 10, and tubular and adapted to support the mast portion 11 of the improved device. The member is provided near the upper end. with a plurality of bearing `balls 12 against which the mast rotates and stepped at its lower end at 13 in the bottom of the standard 10.

In Figs. 1 and il the standard 10 is provided with branching arms 15, each arm terminating in a hook 16 adapted to engage over the head portion of a railway rail 17. Each arm is likewise provided with a Specification of Letters Patent.

Patentedian. 23, 1217.

serial no. 103,470.

brace 18, preferably integral therewith, and engaging the rail at the juncture of its web and Hangs, as shown in Fig. l. By this means the member 10 is firmly supported relative to the rail 17, and may be readily moved from place to place as required. The arms 15 are of sufficient length so that when applied to the rail the mast 11 will clear the side of the car platform, a portion of which is represented conventionallj.7 at 19. The mast 11 may be of any required length and is preferably tubular as shown and is stiffened and strengthened by employing a plurality of ln-bars 20 riveted together', as 'i' disclosed in Fig. 4l: and disposed within the member 11 longitudinally thereof. By this means the member 11 is materially strengthened and stiffened.

The mast portion 11 is designed to support a boom device, represented as a whole at 21, which is preferably formed of four L-bars riveted together in the form shown more particularly in Fig. 2. At the mast end the upper webs of the boom members are provided with a strap device encircling the mast 11, as shown at 22, and extended and riveted or otherwise secured, as shown at 23, to the upper webs of the boom. Secured to the lower webs of the boom are other straps, one of which is represented at 2LT, riveted or otherwise secured at to the opposite face of the lower webs of the boom and partly embracing the mast 11, as shown at 49. The upper straps 22 operate to rotatively couple the boom member to the mast while the lower strap members 24 serve as braces or stops to firmly support the boom in its position at right angles to the mast. in adjustable stop collar 2G is slidably disposed upon the mast and held in place by a set screw or like device 27. The stop collar thus forms a bearing upon which the mast 21 swings and likewise operatesto hold the boom in any position upon the mast. By this means the boom may be adjusted toward and away from the platform 19 as required. A suitable traveler is provided and comprises a U-shaped hanger or yoke 28 carrying a grooved roller or trolley 29 which engages the upper edges of the upper webs of the boom member, as shown in Figs. 1 and 2. The yoke 28 carries a swiveled eye member 30 to which a hoisting mechanism may be attached, the latter not being shown as it n forms no part of the present invention. At its outer end the boom member is preferably provided with a suitable stop 31 to prevent the traveler' from running off from the free end of the boom. f

It .vill thus be obvious that a simply constructed crane or derrick device is produced which may be quickly attached to one of the rails of a railway track and by means of which heavy articles may be quickly hoisted into position above the platform or removed from the platform as may be required.

rlhe improved device may be readily moved from place to place without detaching any of the parts.

The improved device is simple in construction, may be inexpensively manufactured and of any .required size and of any required capacity.

The vertical Webs of the l.-members Which form the body of the boom are Wider than the horizontal vvebs as shown, to increase the vertical strength.

Having thus described the invention, vvhat is claimed as new isl. In a device of the class described, a

Copies of this patent may be obtained for supporting standard, a mast mounted for' rotation in said standard, a boom device including vertically directed Webs, a strap member connected to said boom device at its upper edge and encompassing said mast, stop members connected to said boom at its lower edge and bearing against said mast, and a stop collar adjustable upon said mast and engaging said boom. Y

2. ln a device of the class described, a supporting standard, a mast supported by said standard, a boom formed of L-bars connected by their Webs, a strap device connected to the upper Webs of said boom and rotatively engaging said mast, brace members connected to the lower Webs 'of said boom below said strap device and bearing against said mast, and a stop collar adjustable upon said mast and engaged by said braces.

In testimony whereof l aiiiX my signature.

Jai/ins DYKEs. [L Sg ve cents each, by addressing the Commissioner of Patents, Washington, D. C.

so 'l 

